order amount??
 

I need to have specific order amount.

For instance, min amount is 5, next amount must be 10, then 15 etc.
Xcart by default dus add 1. So the next is 6, 7, 8, etc.

Does anyone know how to do this....

I think it needs bit custom coding.

i think so too, but not much, because xcart by default adds 1, this must be the same amount as set to minimum order amount.